Music is used for a number of different purposes including entertainment, dancing and relaxing. You may have your own special list of songs you think is the best for different purposes. But when it comes to the most relaxing tune to listen to, scientists believe they have found the number #1 tune.

British band and sound therapists Marconi Union together with scientists compiled a song named Weightless that is claimed the most relaxing sound to humans. To carry out their research, scientists played the tune to 40 women and found it to be more effective at helping them relax than songs by Enya, Mozart and Coldplay.

According to the website shortlist.com, “Weightless works by using specific rhythms, tones, frequencies and intervals to relax the listener. A continuous rhythm of 60 BPM causes the brainwaves and heart rate to synchronize with the rhythm: a process known as ‘entrainment’. Low underlying bass tones relax the listener and a low whooshing sound with a trance-like quality takes the listener into an even deeper state of calm”.

Record producer Rick Rubin is the co-founder of the legendary Def Jam label, and is a key figure behind the popularity and commercial rise of hip-hop. In 1985, while attending New York University, Rick and Russell Simmons founded Def Jam in his dorm room. It was from they bowed with the T La Rock and Jazzy Jay single “It’s Yours,” issued in association with Partytime/Streetwise.

Their first record released was LL Cool J’s “I Need a Beat” and Rick Rubin went on to find more hip-hop acts in New York. With artiste such as the Beastie Boys, LL Cool J, Public Enemy and Run–D.M.C. on board, Def Jam grew into a successful record label and popularize hip hop music.

Watch Rick Rubin go back to the NYU Dorm Room, the place where it all began for the very first time.